BAGHDAD – Iraq's fugitive Sunni vice president was sentenced Sunday to death by hanging on charges he masterminded death squads against rivals in a terror trial that has fueled sectarian tensions in the country. Underscoring the instability, insurgents unleashed an onslaught of bombings and shootings across Iraq, killing at least 92 people in one of the deadliest days this year.

It's unlikely that the attacks in 13 cities were all timed to coincide with the afternoon verdict that capped a monthslong case against Vice President Tariq al-Hashemi, a longtime foe of Shiite Prime Minister Nouri al-Maliki. Still, taken together, the violence and verdict could energize Sunni insurgents bent on returning Iraq to the brink of civil war by targeting Shiites and undermining the government.

Al-Hashemi fled to Turkey in the months after the Shiite-led government accused him of playing a role in 150 bombings, assassinations and other attacks from 2005 to 2011 – years in which the country was mired in retaliatory sectarian violence that followed the 2003 U.S.-led invasion that ousted Saddam Hussein's Sunni regime. Most of the attacks were allegedly carried out by al-Hashemi's bodyguards and other employees, and largely targeted government officials, security forces and Shiite pilgrims.